Chitika says that the Galaxy S III “has quickly surpassed the Galaxy Nexus in activity, and is hot on the tails of other Galaxy S models” and “is likely that adoption of the device will continue to increase in the future as the holiday season approaches and Android aficionados upgrade their phones.”

But even with the surge in Galaxy S III mobile Web use, Samsung as a whole still only generates roughly one-fourth as many mobile ad impressions in North America as Apple does with its assorted iPhone models. Despite this disparity, Chitika says that Samsung remains “the iPhone’s closest challenger for the coveted top spot” in mobile ad impressions, and says the companies’ rivalry will be “one of the most intriguing contests in the smartphone market this year.”